Die rolling



JulyZO, 1937. D. P. ANDERSON DIE ROLLING FiledDec. 30, 1935 2Sheets-Sheet 1 July 20, 1937. ANDERSON 2,087,831

DIE ROLLING Filed Dec. 30, 1935 2 Sheets-Sheet 2 J4 Tin:

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Patented July 20, 1937 UNITED STATES PATENT OFFICE 2,087,831 DIE ROLLINGDavid 4P. Anderson, Pittsburgh, Pa. Application December 30, 1935,Serial No. 56,828

4 Claims.

This invention relates to die-rolling, and more particularly theadjustment of the rolling bodies with respect to each other.

In dimrolling operations it is necessary to obtain accurate angularadjustment of the rolls relative to each other in order to properlymatch the configurations of the matrices cut in the periphery of therolls. Uniform angular rotation of the rolls is effected by drivingthrough mated gears or pinions.

Heretofore, the angular or rotative adjustment referred to wasaccomplished through adjustable couplings incorporated in the drivingspindles, or by other expedients equally as inefiicient, These devicesof the prior art necessitate the stopping of the mill and, in addition,are inaccurate.

It is among the objects of the present invention to provide a noveladjusting means for die-rolls which is not only accurate but isoperative when the mill is running.

Another object is to provide a device of the class described which ischeap and easy to install and operate.

The foregoing and further objects will be apparent after referring tothe drawings, in which:

Figure 1 is a side elevation of one form of the device of the invention,and is shown partly in section.

Figure 2 is a sectional view on the line II-II of Figure 1.

Figure 3 is. a view similar to Figure 1 but disclosing a modification.

Figure 4 is a sectional view on the line IV-IV of Figure 3.

Referring more particularly to the drawings, the numeral 2 designates amill stand which supports a pair of rotatable mandrels 3. Each of theserotatable mandrels 3 carries a die-roll 4. A pinion stand 6 is disposedadjacent the-mill stand 2 and supports a pair of upper and lower shafts8 and 9, respectively, which are connected to the rotatable mandrels 3by universal spindles I0. I

The bottom of the pinion stand 6 is provided with ways 12 in which thereis slidably mounted a plate 13. v

The lower shaft 9,,which is supported by the Y pinion stand 6, carriesapair of elongated keys 14 on which there is slidably mounted a pinion 15having gear teeth of the single-helical type. This pinion I5 iscontacted'on its sides by a pair of forks l6 which are mounted on theplate l3. The upper shaft 8, which is supported by the 5 pinion stand 6,carries a wide pinion 18 having on. 80-24) I From the foregoing it willbe seen that the movement of the plate 13 in the ways l2 will effect avery minute and accurate relative angular or rotative adjustment of therotatable mandrels 3 and accordingly the die-rolls 4. For this purpose,the plate l3 carries a nut 20 in which there is disposed an elongatedscrew 21. This elongated screw 21 is coupled, as at 22, to a suitablycontrolled reversing motor 23.

Preferably, although not necessarily, the motivation of the rotatablemandrels 3 is effected through the upper shaft 8 of the pinion stand 6,as, for example, by connection to a suitable power-driven shaft 25.

Referring to Figures 3 and 4 of the drawings,

I have disclosed a modified form of the apparatus of the invention.According to this modification, a separate pinion stand is not used, butthe adjusting means and drive-shaft applied directly to the roll stand.The drive-shaft is indicated at as being connected to one end of thelower mandrel 3. The other end of this mandrel, and the same end of itscounterpart, are extended as shown at 32 and 33, respectively. Theextension 33 of the upper mandrel 3 carries a'wide pinion 34 of thepreviously referred to single-helical type. The extension 32 of thelower mandrel carries a pair of elongated keys 35 on which there isslidably mounteda relatively narrow pinion 31 also of the"single-helical type. This narrow pinion 31 carries an integral bearinghub 38.

A bed 40 is disposed beneath the extended end 32 of the lower mandrel 3and provides a pair of ways 41 in which there is slidably mounted aplate 42. This plate 42 carries an upwardly extending fork 43 whichembraces the lower half of the integral bearing hub 38 of the narrowpinion 31. A nut 45 is mounted on the plate 42 and has disposed thereinan elongated screw 46 which is journaled, as at 41, on the bed 40. The,

end of the elongated screw 46 which is remote from the plate 42 isprovided with a handwheel 48 for enabling its easy rotation.

While I have shown and described several specific embodiments of myinvention, it will be understood that I do not wish to be limitedexactly thereto, since various modifications may be made withoutdeparting from the scope of my invention, as defined by the followingclaims.

I claim:

1. In a die rolling mill the combination of die rolls,-means for drivingsaid die rolls, helical gears connected to and adapted to rotate withsaid die rolls, said helical gears adapted to intermesh, means forslidably supporting one of said helical gears on said connection withsaid die roll and means for moving one of said intermeshing gearsaxially with respect to the other helical gear so as to efiect arelative circumferential movement of one of said die rolls with respectto the other die roll without interrupting the transmission of power tosaid driving means.

2. In combination with a pair of die rolls, driving means for said dierolls, means for adjusting the relative positions of said die rolls withrespect to each other comprising, a support, shafts carried by saidsupport, helical gears rotatably mounted on said shafts, guideways onsaid support, a plate slidable in said guideways, said plate havingupwardly extending arms adapted to engage one of said helical gears, anopening in said plate, a nut carried by said plate and provided withaninternally threaded opening coinciding with the opening in said plate, ascrew-threaded rod extending through said internally threaded opening insaid nut and the opening in said plate and means adapted to rotate saidrod for moving said slidable plate whereby one of said gears is movedaxially with respect to the other helical gear to effect acircumferential movement of one of said die rolls with respect to theother die roll.

3. In a die rolling mill the combination of die rolls, means for drivingsaid die rolls, helical gears connected to and adapted to rotate withsaid die rolls, said helical gears adapted to intermesh, one of saidhelical gears provided with an integral hub extending laterallytherefrom, means for slidably supporting one of said helical gears onsaid connection with said die roll and means for moving one of saidintermeshing gears axially with respect to the other helical gear so asto effect a relative circumferential movement of one of said die rollswith respect to the other die roll without interrupting the transmissionof power to said driving means.

4. In a die rolling mill, the combination of die rolls, means fordriving said die rolls, helical gears connected to and adapted to rotatewith said die rolls, said helical gears adapted to intermesh, one ofsaid helical gears provided with an integral hub extending laterallytherefrom, means for slidably supporting one of said helical gears onsaid connection with said die roll and means for moving one of saidintermeshing gears axially with respect to the other helical gear so asto efiect a relative circumferential movement of one of said die rollswith respect to the other die roll without interrupting the transmissionof power to said driving means, and said last mentioned means includinga support, guideways on said support, a plate slidable in saidguideways, said plate provided with an upwardly extending forked portionadapted to engage said integral laterally extending hub and a thread rodadapted to pass through said plate and journalled in said support.

DAVID P. ANDERSON.

